This paper investigated the effects of bamboo vinegar on controlling microorganism in rhizosphere with ‘JinYou 30’ cucumber (Cucumis sativus L.). Treating breeding rhizosphere with bamboo vinegar resulted that the quantity of bacteria increased, but the quantity of fungi decreased, and the quantity of actinomyces was maximum when the concentration levels of bamboo vinegar was 0.5%. It could promote the quantity of bacteria, fungi and actinomyces that irrigating the cucumber with 0.5% bamboo vinegar during the seedling phase. This promoting effect was weakened when the concentration level of bamboo vinegar was too high or low.
